Tanner will be closed Monday, January 21st & will resume normal operations on Tuesday, January 22nd.
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Self-Drilling Screws

Self-drilling fasteners eliminate separate drilling and tapping operations for faster, more economical installations. Tanner Bolt & Nut Corp. offers the most complete selection of self-drilling fasteners made in the United States by Parker-Kalon and Elco.


  • Save Time and Money - Eliminate separate drilling and tapping operations for faster, more economical installations.
  • Starts Exactly Where It Is Placed - State of the art forging process technology and tooling produced to strict specifications provide a sharp, clean and consistent drill point.
  • Broad Selection of Sizes and Applications - A wide variety of head styles and drive systems are available to meet specialized application and installation demands. Self-drilling screws are available to penetrate thin sheet metal through 1/2" thick steel.
  • Selection of Finishes - Screw are provided zinc plated with clear chromate finish. When noted, screws are also available with Stalgard, corrosion-resistant coating, which provides 800 hours of salt resistance.